The application of CALPHAD Techniques in the Development of a New Gas-Turbine Disk Alloy

摘要

The final design of the new Ni-based superalloy was a balancing act between stability and mechanical properties. The alloy could not have been designed within the time frame and cost of the overall program without using the CALPHAD model. There was no other way to carry out the sensitivity study required to judge where the balancingpoint was, with out a prohibitively expensive and time-consuming trial program.